Wall or baffle tile for water-tube boilers



Oct. 23, 1. 928.

C. W. WEHMEYER WALL OR BAFFLE TILE FOR WATER TUBE BOILER Filed April 10, 1926 AT To EH6 Y6.

Patented Get, 23, 1928.

UNITED STATES PATENT OFFICE.

CLARENCE W. WEHMEYER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO HEINE BOILER COM- PANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

WALL OR BAFFLE 'IILE FOR WATER-TUBE BOILERS.

Application filed April 10, 1926. Serial No. 101,126.

This invention relates to refractory tile of the kind that are used in water tube boilers to form walls and bafiles which are acted upon by the gases and products of combustion that flow through the boiler.

One object of my invention is to provide a wall tile or baffle. tile for water tube boilers that can be installed and removed quickly and easily and which is of such form that it Will be securely interlocked with the boiler tubes when it is arranged in operative position.

Another object is to provide a boiler tile which, in addition to having the desirable characteristics above. pointed out, is inexpensive to manufacture and of such design that gravity tends to hold it in operative position.

And still another object of my invention is to provide a wall or baflie for water tube boilers that is of novel construction.

Figure 1 of the drawings is a vertical longitudinal sectional view of a portion of a water tube boiler, illustrating my improved tile used to form one end wall of a space between two tube banks through which gases circulate.

Figure 2 is an enlarged horizontal sectional view, taken on the line 2-2 of Figure 1.

Figure 3 is a perspective view, illustrating two of my improved tile arranged in operative engagement with each other; and

Figure 4 is an elevational view, illustrating my tile used to form a baflie of a water tube boiler.

In Figure 1 of the drawings, A designates the water tubes of a water tube boiler, B designates sectional headers or water boxes to which the ends of said water tubes are connected, and O designates nipples or short vertical tubes that are used to connect the headers or water boxes B of two adjacent tube banks. In order to prevent the gases which circulate between the tube banks from escaping between the tubes or nipples C, refractory tile D are arranged between said tubes or nipples so as to form an end wallfor the space between the tube banks. The tile 1) are constructed so that they can be installed and removed quickly and easily and they are of such design that when they are arranged in operative position, gravity tends to hold them in engagement with each other and cause said tile to bear against the nipples in such a way that the wall formed by said tile is securely interlocked with the nipples C.

The tile D are preferably of identical form and are of such design that they are adapted to be arranged in pairs between the nipples C. As shown in the drawings, the tile D each consist of a substantially wedge-shaped member so that when two of said tile are arranged in operative engagement with each other, as'illustrated in Figure 3, they virtually form a block corresponding in length to the distance between two adjacent nipples and provided at its ends with vertically-disposed, concaved surfaces 1 that receive said nipples, said block being divided on a dia' onal line and provided with flat end faces t at bear squarely and evenly on the blocks arranged above and below the same. Each tile is provided at one end with a relatively wide face 2 and at its opposite end with a relatively narrow face 3, which faces 2 and 3 are disposed in parallel relationship to each other and at substantially right angles to the concaved lateral face 1 that receives the tube or nipple against which the tile bears. The other lateral face of the tile that is opposed to the concaved face 1 consists of a fiat, smooth,inclined surface 4 thatextends from the narrow'end face 3 to the broad end face 2. The tile may be of any preferred height or length, but the end faces 2 and 3 are preferably made of such width that two of said tile, when arranged in reversed relation with their inclined surfaces 4' bearing on each other, will fit snugly between two of the nipples C and partially em brace said nipples, as shown in Figure 2. The thickness of the tile will vary according to the diameter of the tubes or nipples with which they are used, but they should bemade thick enough so as to have a substantial bearing area on the nipples. In the form of my invention herein illustrated the tile D are considerably thicker tian the diameter of the nipples, and they are provided on their front and rear sides with inclined surfaces 5 that facilitate the installation and removal of said tile. In other words, instead of "making; the front and rear sides of the tile in the form of flat,

vertical surfaces disposed at right angles to the concaved face and extending unbrokenly from the concaved face 1 to the inclined lat eral surface 4, I cut away the front and rear sides of the tile in proximity to the inclined lateral face 4, thereby producing a tile whose front and rear sides are each made up of a flat, verticalsurface 5 disposed at substan tially right angles to the concaved face 1, and an inclined face 5 which merges at one edge into said face 5 and merges at its opposite edge into the inclined face 4.

To install tile of the construction above described it is only necessary to arrange one tile in an upright position alongside of one of the nipples or tubes with the broad end face 2 of said tile resting on a supporting means, and then arrange another of said tile 1n reverse relation to the said first tile. with the concaved surface of said second tile bearing against the adjacent nipple and the narrow end face 2 of said second tile resting on said supporting means. Gravity holds the inclined lateral face 4 of the second tile snugly against the inclined face 4 of the first tile and exerts pressure on said first tile in adirection tending to wedge both of said tile between the nipples. It is not necessary to employ a means to lock the two tile of eachpair of tile together, because the co-operating inclined surfaces 4 on said tile effectively prevent one tile from twisting or turning relatively to the other when said surfaces are in engagement with each other. The only way that one'tile can be twisted or turned relatively to the other tile of the pair, is to first raise the reversed tile, namely, the one with its broad end face 2 presented upwardly, and then oscillate or revolve said reversed tile around the nipple positioned in the concaved lateral face 1 of same. In removing the tile the above described procedure is followed, namely, the reversed tile is raised slightly and then revolved about the nipple or tube against which it bears, and it is at this time that the inclined surfaces 5 on the front and rear sides of the tile come into-play by providing" a clearance between the two tile of each pair when the reversed tile is turned or oscillated relatively to its co-operating tile.

A boiler wall of the construction above described can be erected or taken down quickly, it is exceptionally strong and rigid, due to the fact that the tile from which it is constructed are securely interlocked with the boiler tubes or nipples and are combined with each other in such a manner that they cannot accidentally move out of position, and still another advantage of such a structure is its low cost, resulting from theuse of tile, all of the same kind, which do not require the installation of separate fastening devices to secure them to the tubes or to connect them to each other.

As previously stated, my improved tile can be used either to form a wall or a battle of a water tube boiler. Accordingly, in Figure 4 of the'drawings I have illustrated it used to form a baflie. In said Figure A designates the water tubes of a boiler, B designates a drum to which said tubes are connected and D designates tile constructed in accordance with my invention combined with one row of tubes so as to form a. bafiie. Said tile are of the construct-ion previously described, and they are arranged in pairs be tween the tubes A, as shown in Figure 4, thereby producing a baffle that can be quickly installed or removed, that is inexpensive and which is. perfectly tight.

Having thus described my invention, what I claim as new and desire to secure by Letters v Patent is:

1. A Wall or baffle tile for water tube boilers provided at one of its lateral sides with a concaved surface that is adapted to receive a tube or nipple and provided at its other lateral side with a flat, inclined surface that is adapted to be engaged by a similar surface on a reversely arranged tile whose concaved sur face receives an adjacent tube or nipple, the Width of said inclined surface being less than the width of said concaved surface so as to" facilitate turning or rotation ofsaid tile after it has been disengaged from the tile with which it co -operates.

2. A wall or baffle tile for water tube boilers provided with end faces of diiferentareas, a lateral side that is concaved soas to receive a boiler tube or nipple, and an opposed lateral side having a flat inclined face, the front and rear sides of the tile being out awayadjacent said flat, inclined face, for thepurposedescribed.

3'. A wall or baille tile for water tubeboilers consisting ofa member, provided with parallel end faces of different areas, a concaved lateral side that is adapted to receive a boiler tube or nipple, an opposed lateral side constructed in the form ofa fiat, inclined surface, and inclined faces on the front and rear sides of said tile which merge into said lateral inclined surface. a 4. A bafile for Water tube boilers made up of tile arranged in pairs between adjacent tubes or nipples of the boiler and proportioned so as to form an imperforate wall, said tile being provided with co-operating" inclined surfaces disposed so that gravity tends to cause one tile of each pair to wedge between one of the tubes and the other tile of the pair and thus force said Other tile laterally into snug engagement with an adjacent'tube or nipple, the tile of the respective pairs being cut away adjacent saidinclined surfaces" so as to facilitate the turning or rotation of one tile of a pair after it hasbeen disengaged from its co-operating tile; 7 5. A Wall or bafile for water tube boilers Ill-3 I IT) made up of tile arranged in pairs between adportions on said tile that partially surround jacent tubes or nipples of the boiler and prothe tubes against which they bear, and in- 10 vided with co-operating inclined surfaces disclined faces on the front and rear sides of posed so that gravity tends to cause one tile said tile that facilitate turning or rotation of of each pair to Wedge between one of the one tile'of each pair after it has been moved tubes and the other tile of the pair and thus to disengage it from its co-operating tile.

force said other tile laterally into snug engagement with an adjacent tube or nipple, CLARENCE W. WEI-IMEYER. 

